Method of spinning artificial silk



Se t. 1

p 13 927 H. P. BASSI-:TT ET AL METHOD OF SPINNING ARTIFICIAL SILK Filed Deo. l2, 1925 IIIIIIAIIIIIIII gwumtoz Patented Sept. 13, 1927.

UNITED STATES PATENT OFFICE.

HARRY P. BASSETT, OF CYNTHIANA, KENTUCKY. AND THOMAS F. BANIGAN, OF

CLIFTON HEIGHTS, PENNSYLVANIA, SAID BASSETT. 4

Application filed December This invention relates to methods of spinnin artificial silk, and more particularly to met ods of twisting the strands to form a thread after the strands have' been collected on a spool. l

In spinning artificial silk, it 1s advantageous to collect the strands on a spool as vthe tension on the strands and the speed may thus be more easily regulated. As is well known, uniformity of the silk depends on the uniform tension and speed. It is desirable, however, to avoid the spindle method of twisting the strands which is usually followed when the spun 'silk is collected on a reel or spool. The spindle method of twisting is open to several objections, one of which is the frequent breakage of the threach at the high rate of speed necessary in properly twisting the strands as they are delivered from the spindle.

In the present invention, we obtain the advantages of reel spinning without the attendant disadvantages of twisting the strands by rotation of the reel on a spindle. Instead of removing the strands from the reel in the old manner, the reel is rotated in the opposite direction and the threads twisted in a centrifuge basket.

The advantages of this process are numerous. All the advantages of collecting the spun silk on a reel or spool are retained and at the same time, the attendant disadvantages of spindle twisting are eliminated. Furthermore, the speed and tension during the removal of the strands from the reel is ractically automatically regulated by the act that as the diameter of the strands on` the reel decreases the diameter of the cake in the centrifuge basket decreases at the same time and thus .the necessity of adjustment of the relative speed of the spool and the centrifuge machme is wholly or partially eliminated.

A further advantage of the invention is the fact that the advantages of the spool method of spinning may be retained and at the same time, the advantages of twisting in a centrifuge machine, such as washing and the like, may also be retained.

In the accom anying drawings,we have diagrammatical y illustrated the steps of the process. In this showing: j

Figure 1 is a diagrammatic illustration of the spinning of the silk from7 a spinneret, an a ASSIGNORS, BY MESNE ASSIGNMENTS, TO

METHOD OF SPINNING ARTIFICIAL SILK.

12, v1925. serial No. 75,143.

Figure 2 is a diagrammatic illustration of the twisting of the strands in a centrifuge machine to form a thread.

In the drawings, the reference numeral 1 designates a spinneret of the usual type by means of which a plurality of strands 2 of artificial silk are projected through a precipitating bath (not shown) and collected on a spool or reel 4. lA receptacle 5 may be arranged beneath the reel to contain a suitable washing solution, a ortion of the solution being taken up by tiie reel on each revolution to act on the strands arranged thereon. During the spinning o eration, the reel is revolved in a clockwise irection, as indicated by the arrow, by any suitable driving mechanism (not shown).

After the silk has been spun on the reel. the reel isrevolved in a counter-clockwise direction, as indicated in Figure1 2 of the drawings, and the strands carried downwardly, as indicated at 6, into a centrifuge 7. The centrifuge is of the ordinary type and is provided with a centrally arranged guide 8 .having an extension 9 connected to any suitable mechanism (not shown) by means of which it is reciprocated in the usual manner. A funnel 10 is arranged at the top of the guide by means of which any suitable washing solution may be passed over the thread, as 1t is formed. As shown,

the bottom of the centrifuge is providedy with openings 14 in its side walls through which the llquid is thrown outwardly by centrifugal force causing the thread to form Iin a cake 15 on the side wall in the usual manner. After the thread is removed from the centrifuge basket, it is wound into skeins on reels.

. It will be apparent that as the thread is removed from the reel, the diameter decreases and that the length of the thread withdrawn uponeach revolution of the reel -therefore varies. At the same time, the cake 15 decreases in diameter as it is built up and the length of'thread necessary to extend throughout a complete revolution of the cake decreases in the same proportion.

3 mounted on a suitable shaft p each may be directly proportional, whereby governing mechanism to regulate the tension can be abolished.

llt is to be understood that the form ot our invention herewith shown and described is to be taken as a preferred example of the same, and that various changes in the shape,

size, and arrngement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

1Weclaim:

t 1. The herein described process which comprises spinning strands of artiicial silk from a spinneret, collecting the strands on a positively rotated spool, positively rotating the spool in the opposite direction to unroll the strands, and passing the strands into a centrifuge machine to twist them andA form a thread.`

neeaeei 2. The herein described process which comprises spinning strands of articial silk from a spinneret, collecting the strands on a positively rotated spool, positively rotating the spool in a reverse direction at a regulated speed to withdraw the strands, and twisting them to form a thread. N

3. The herein Vdescribed process which comprises spinning strands of artiicial silk from' a spinneret, collecting the strands on a. positively rotated spool` positively rotating the spool in the opposite direction to unroll the strands, passing into a centrifuge machine to twistthem and form a thread, and simultaneously regulating and syn-l chronizing the the speed of the spool and the centrifuge machine during the twisting operation.

In testimony whereof, We afix our si it tures.

HARRY P. BASSETT. THOMAS l". BANllGAN. 

